Activating this trainer

If not state otherwise below, press F1 at main menu.
Listen for 'Trainer Activated'.
Press desired hotkey. All hotkeys can be changed on the trainer.

Trainer Options

# Player 
     NumPad1: Unlimited Health
     NumPad2: Unlimited Stamina
     NumPad3: Infinite Jetpack Fuel
     NumPad4: Unlimited Backpack Electricity
     NumPad5: Save Position
     NumPad6: Load Position
     NumPad7: Save Position 2
     NumPad8: Load Position 2
     NumPad9: Teleport Forward
     Multiply: Low Gravity
     Add: Fly
     Separator: Fly Up
     Subtract: Fly Down
     Decimal: Ghost Mode
     Divide: Shrink Player
     F1: Game Speed

Notes

Ghost Mode:
You can FLY and MOVE through most things.